Journal bearing for railroad vehicles



Sept. 9, 1930.

' WITNESSES C. W. TODD JOURNAL BEARING FOR RAILROAD VEHICLES Filed Aug.5, 1927 Patented Sept. 9,1930

UNITED STATES PATENT OFFICE cnazanns w. roan, or scmmnc'rnnr, nnw YORK.ronnnai. :enanme ron mnosn vmIcLEs Application fled August 5,

This invention relates to bearings for the journals of locomotives andother railroad vehicles, and its object is to provide an appliance ofsuch character, which will be of a simple and inexpensive construction,ready applicability in standard practice, and operative to ensure theeffective lubrication of the surfaces in contact;

The" improvement claimed is hereinafter to fully set forth.

In the accompanying drawing: Figure 1 is a side view, in elevation, of aportion of an 7 electric locomotive, in which the invention is iapplied; Fig. 2, a vertical transverse section,

i on an enlarged scale through a journal hearing embodying theinvention, in operative position in a 'ournal box, taken on the line noa: of Fig. 3; l ig. 3, a plan or top view Fig. 4, a transverse section,on the line a m or Fi W 3, through the journal bearing, detache and;Fig. 5, a vertical longitudinal section on the line 3 1 of Figs. 3 and4.

It has een found in practice, with the ordinary design of 'ournalbearings,-that the W action of the axle oi the vehicleon which it isapplied, when in rotation, collects and delivers oil to the grooves inthe hearing, which soon overflow, throu h the filling hole in the top,due to their li m1ted capacity and direct W connection tothe'filling-hole. The resent I invention is desi ned to eliminate t isobjection, by provi ing capacious cavities for the reception of oil, inthe interior of the bearin i i In t e practice of the invention,referring descriptively to the specificv embodiment thereof which isherein exemplified, the jour-' nal hearing, which is indicated, as anentirety, by the reference numeral, 1, is fitted, as heretofore in ajournal box, 2, having an oil cellar or sump, 3, located between itsside walls, said oil cellar being fitted with oil soaked waste orpacking, 3 and bei open at its top to the journal, 4, of the vehic eaxle. The oil cellar 1s secured in position in the journal box, bytransversely extending pins or bolts, 3". Oil is supplied to the journalbearin at its top, through an oil conduit, 2-, in t e journal box. i}The journal bearing, 1, is a hollow or 1927. 8erlal no. 210,753.

chambered casting, of rectangular'form in longitudinal section andhavin' an arcuate bottom, which may be faced wit a liner, 1,

of 'babbitt, or other suitable soft metal, curved to the radius of theaxle journal. An oil reservoir is cored in the journal bearing,said'reservoir preferably comprising, as shown, a plurality ofcompartments, 1*, on each of its sides, said compartments being upwardlyand inwardly curved, in substan- 60 tial similarity to the-bottom of thebearing; and having open tops, which are covered by a plate, 1, securedto the topof the bearing and closingthe tops of the compartmentsthereat. Said compartments communicate, 66 at their lower extremities,with each other and with the arcuate face of the bearing, throughopenings, 1, and longitudinal passa es, 1'. he superimnosedload onthejour: nah box is transferred, through the cover 70 plate, 1, to thejournal bearing,-1, and the end walls, and partition walls between thecompartments of the journal bearing, constitute the vertical memberswhich support this load. The compartments on the opposite sides of thejournal bearing, communicate,-through the middle rib thereof, bypassages, 1", which allow oil to pass from each compartment on one side,to a corresponding compartment on the opposite side, and the oil supplis equalized and distributed through t ecompartments of each side, bythe longitudinal passage, 1', of that side. Thus, 011 rising in one ofthe compartments;

due to the action of the axle, enters a cavit 95 of large capacity, andif this is filled, wil overflow throu h the communicating passage, 1',to'the opposite side com artment. One of said passages, at the middle ofthe length of the bearing is open at top to the filling conduit .2", ofthe journal box, and oil overflowing from one side, passes to the oposite side without escaping throu h the fil ing conduit.

It will be seen that t e invention provides a journal bearing, embodyingan 11 reservoir of ample capacity, which, while reduo-. ing the weightof the bearing, ensures the ample strength thereof. Further, as thelarge capacity of the interconnected compartments, prevents the escapeof oil from the box, through the filling conduit, efiective lubricationis correspondingly promoted.

The invention clalmed as new, and desired to be secured by LettersPatent,is:

1. In a device of the class described, the combination of a hollowjournal bearing; and a journal box therefor, having oil filling means,whereby oil is supplied to. the hollow of said bearing, the hollow beingcomprised of a plurality of chambers open to the journal, some only ofwhich are out of communication with the said oil fillin means, exceptindirectly through their sai communication with the journal, wherebythey receive surplus oil therefrom for subse uent refeeding thereto. I

2. In, a device 0 the class described, the combination of a hollowjournal bearing; and a journal box therefor, having oil filling means,whereby oil is supplied to the hollow of said bearing, the hollow beingcomprised of two longitudinal rows of chambers, one

on each side of the vertical central plane of the journaLsome only ofsaid chambers being out of communication with'the said oil g means,except indirectly through their said communication with thejournal,.where- I by they receivesurplus oil therefrom for subsequentrefeeding. thereto, each of said chambers of one row being incommunication with a corresponding chamberj of I the other row throughan opening at the top of their separatin wall, whereby one chamber mayoverflow into the other.

3. In a device of the character described, the combination of a 'ournalbox; a journal; and'a hollow crown arin interposed between the box andthe j ourna the said crown bearing com rising a longitudinal partition,a lurality o lubricant chambers on each side 0 the partition, aplurality of passageways leading through the partition, each passagewayestablishing communication between one of the chambers on one side ofthe partition and one of the chambers onthe other side of the partition,and a passageway leading from each chamber to the journal.

4. ha device of the character described, the combination of a 'ournalbox; a journal;

and a hollow crown arin interposed between the box and the journa thesaid crown bearing comprising a ongitudinal partition,

a plurality of chambers on each side of the partition, a pluralit ofgrooves each open to the journal a lu 'tyof passageways leadmg through te partition each passageway establishing communication between one ofthe chambers on one side of the partition and one of the chambers on theother side of the partition, and a passa%way leading from each chamberto one of t e grooves. 6. In a device of the character described,

the combination of a journal box; ajournal;

and a hollow crown beari interposed between the box and the om-d5, thesaid crown bGGHDg comprising a ongitudinal partition,

